Acoustical head-set



FIG. 1 is a perspective view of an acoustical head-set showing our newdesign;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view; and

FIG. 4 is a view of the inner face of the acoustical head-set of ourdesign.

The ornamental design for an acoustical head-set, substantially as shownand described.